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harina [27]
3 years ago
11

Write an expression showing 8 less than the sum of x and n. Is the answer (n+x)-8

Mathematics
2 answers:
Alik [6]3 years ago
7 0
It is x+n-8. I believe that if you put the parentheses it will mean you are multiplying x+n by -8.
spin [16.1K]3 years ago
3 0
The answer you have is correct, but the parenthesis are not necessary
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If one wanted to solve the equation below using the quadratic formula, what would be the b value used to substitute into the qua
OLga [1]

Answer:

b = 5

Step-by-step explanation:

All quadratic equations are formed in the format of a^{2} + bx + c = 0

Using this formula, we can re-arrange the equation to fit the given format.

3x^{2} - 2 = -5x
3x^{2} + 5x - 2 = 0

5 is plugged in for "b" in this equation, therefore b = 5.

4 0
1 year ago
-10.0-(-3.4)<br><br> also you have to simplify your answer
uysha [10]
-13.4 is the answer. And this is simplified form
4 0
3 years ago
Read 2 more answers
Write the denominator of the rational number257/500 in the form 2 m x 5 n , m and n are negative integers Hence write its decima
maw [93]

Answer:

0.514

Step-by-step Explantion:

Denominator = 500 = 2^2 * 5^3

257/500 = 257/2^2*5^3 = 2*257/2*2^2*5^3 = 514/2^3*5^3 = 514/(2*5)^3 = 514/10^3 = 0.514

6 0
3 years ago
I'm not sure if D is right
Rzqust [24]
Ratio and proportion

height :legnth of shadow=56:49 (man's shadow)
we assume the ratio is the same for the tower thing (obelisk)

so
56:49=x:28
conver tto fraction
56/49=x/28
times both sides by 28
1568/49=x
32=x
answer is 32ft
5 0
3 years ago
A brother and a sister are in the same math class. there are 8 boys and 20 girls in the class. one boy and one girl are randomly
Pavlova-9 [17]
<h2>the answer i thinkk is 2/20 because since there ae 20 children, then the brother and sister each have a 1% chance, hope this helped!</h2>
7 0
3 years ago
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